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Pneumococcal Disease

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Pneumococcal [noo-muh-KOK-uhl] disease is caused by a bacterium known as Streptococcus pneumoniae, or pneumococcus. Pneumococcal infections can range from ear and sinus infections to pneumonia and bloodstream infections. Children younger than 2 years of age are among those most at risk for disease. There are vaccines to prevent pneumococcal disease in children and adults.

NEW! Adults 65 years or older are now recommended 2 pneumococcal vaccines. Learn more.

Pneumococcal Topics

About Pneumococcal Disease

Symptoms, complications, treatment, prevention…

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For Clinicians

Symptoms and diagnosis, treatment, prevention…

Pneumococcal strain reacting with type-specific antiserum (Quellung reaction) prepared in CDC’s Streptococcus Lab.
For Laboratorians

CDC’s Streptococcus Lab (“StrepLab”) provides pneumococcal serotyping and the antimicrobial susceptibility testing…

Streptococcus pneumoniae micrograph
Drug Resistance

Streptococcus pneumoniae has become resistant to some antibiotics…

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Surveillance & Reporting

Rates of pneumococcal disease before and after vaccine introduction…

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Publications on pneumococcal disease and Streptococcus pneumoniae

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Audio/video products, digital materials, publications, print materials, programs

Pneumococcal Vaccination

Pneumococcal Vaccines
Pneumococcal vaccines are very good at preventing severe disease, hospitalization…

Vaccine Information Statements
These one-page CDC vaccine information statements explain who should get pneumococcal vaccines and when.

Pneumococcal Vaccine Basics
Offers comprehensive information about pneumococcal vaccines and other educational tools.

Vaccine Safety
As with all vaccines, there can be minor reactions, including pain and redness at the injection site, headache, fatigue or a vague feeling of discomfort.

Pneumococcal Vaccine Recommendations
Recommendations of the Advisory Committee on Immunization Practices (ACIP)



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